### Present Remotely

Send the link below via email or IM

• Invited audience members will follow you as you navigate and present
• People invited to a presentation do not need a Prezi account
• This link expires 10 minutes after you close the presentation

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

# Negative numbers

To explore add/subtract with negative numbers (use brackets to identify a negative or positive number), then multiplying with negatives involved
by

## abbey norman

on 19 October 2012

Report abuse

#### Transcript of Negative numbers

Where do we use negative numbers? number order Which card? Choose the correct card from the eight shown to make to sum correct. 0 -9 -1 -3 +5 +2 -4 +7 -2 + -9 = 0 -9 -1 -3 +5 +2 -4 +7 +7 0 -9 -1 -3 +5 +2 -4 +7 9 +2 = 0 -9 -1 -3 +5 +2 -4 +7 2 + +5 = 0 -9 -1 -3 +5 +2 -4 +7 -7 + +2 = -9 + -8 + = 0 -9 -1 -3 +5 +2 -4 +7 -3 + -3 = 0 -9 -1 -3 +5 +2 -4 +7 -5 + -4 = -3 + 0 -9 -1 -3 +5 +2 -4 +7 -5 + -9 = -1 + Evaluating directed number statements

On A3 sheets organise your statements under the headings Always, sometimes and never true! Rules Negative numbers Adding and subtracting Questions Examples

3 - 7

3 - 2 - 5

-3 - 5 + 4 -2 What rule?

A packet of biscuits at Tesco's costs £3. At Asda they are twice as much...

It was -30 degrees Celsius in Iceland, the coldest temperature recorded in history was 3 times as cold...

I owed the bank manager 15 lots of £10 installments

Two wrongs make a right???

What is -2 + -2 + -2 + -2 + -2? Starts off hot and gets colder Multiplying and dividing Put the following in order of size from smallest to biggest : 1)5 °C, 3 °C, -5 °C, 0 °C, -8 °C

2)-34 m, 12m, -15m, 1m, -3m

3)2.5, -0.5, -1, 4, -2, -1.5, 0 You MUST consider this table whenever you are MULTIPLYING numbers ! + × + = +
- × - = +
+ × - = -
- × + = - Whats the tallest and lowest thing you see? Examples

5 x 5

-4 x -3

7 x -2

-5 x 8 - × + = - + × - = - - × - = + + × + = + -3 -2 -1 -3 -2 -1 × 3 2 1 0 0 1 2 3 Dividing with negatives